程序说明：调节电位器R37输出电压，观察LCD上显示的数值

 ADC工作模式配置:

ADC1 独立模式,单次转换

/* Includes ------------------------------------------------------------------*/

#include "stm32f10x.h"

#include "lcd.h"

#include "stdio.h"

/* Private typedef -----------------------------------------------------------*/

/* Private define ------------------------------------------------------------*/

/* Private macro -------------------------------------------------------------*/

/* Private variables ---------------------------------------------------------*/

uint32_t TimingDelay = 0;

uint8_t ADC_Flag;

/* Private function prototypes -----------------------------------------------*/

void Delay_Ms(uint32_t nTime);

void ADC_Config(void);

float Read_ADC(void);

/* Private functions ---------------------------------------------------------*/

/**

  * @说明     主函数

  * @参数     None 

  * @返回值   None

  */

int main(void)

{   

float adc_temp;

uint8_t  string[20];  //ADC结果

       SysTick_Config(SystemCoreClock/1000);  //1ms中断一次

ADC_Config();

//LCD工作模式配置

STM3210B_LCD_Init();

LCD_Clear(White);

LCD_SetTextColor(White);

LCD_SetBackColor(Blue);

    

LCD_ClearLine(Line0);

LCD_ClearLine(Line1);

LCD_ClearLine(Line2);

LCD_ClearLine(Line3);

LCD_ClearLine(Line4);

LCD_DisplayStringLine(Line1,"      ADC DEMO      ");

LCD_DisplayStringLine(Line3,"  PB0-ADC channel 8 ");

LCD_SetTextColor(Blue);

LCD_SetBackColor(White);

    while(1){

//200毫秒扫描一次ADC

if(ADC_Flag){

ADC_Flag = 0;

adc_temp = Read_ADC();

sprintf(string,"%s%.3f","ADC Value:",adc_temp);

LCD_DisplayStringLine(Line7,string);

} 

}

}

/**

  * @说明     ADC时钟源及工作模式配置

  * @参数     none

  * @返回值   None

  */

void ADC_Config(void)

{

GPIO_InitTypeDef GPIO_InitStructure;

ADC_InitTypeDef ADC_InitStructure;

RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1,ENABLE);

RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB,ENABLE);

//PB0-ADC channel 8

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;

GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;

GPIO_Init(GPIOB, &GPIO_InitStructure);

// ADC1 工作模式配置

ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;  

ADC_InitStructure.ADC_ScanConvMode = DISABLE;

ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;  //单次转换

ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;

ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;

ADC_InitStructure.ADC_NbrOfChannel = 1;

ADC_Init(ADC1, &ADC_InitStructure);

ADC_RegularChannelConfig(ADC1, ADC_Channel_8, 1, ADC_SampleTime_13Cycles5);    

ADC_Cmd(ADC1, ENABLE);   

ADC_ResetCalibration(ADC1);

/* Check the end of ADC1 reset calibration register */

while(ADC_GetResetCalibrationStatus(ADC1));

ADC_StartCalibration(ADC1);

/* Check the end of ADC1 calibration */

while(ADC_GetCalibrationStatus(ADC1));

}

/**

  * @说明     读取ADC转换结果

  * @参数     none

  * @返回值   ADC_VALUE:ADC转换结果

  */

float Read_ADC(void)

{

float ADC_VALUE;

ADC_SoftwareStartConvCmd(ADC1,ENABLE);

Delay_Ms(5);

ADC_VALUE = ADC_GetConversionValue(ADC1)*3.30/0xfff;

return ADC_VALUE;

}

/**

  * @说明     延时函数

  * @参数     nTime: 延时时间

  * @返回值   None

  */

void Delay_Ms(uint32_t nTime)

{

    TimingDelay = nTime;

    while(TimingDelay != 0);

}

/******************************************END OF FILE*************************/